Having shelled out for a torque-wrench, there is insufficient space/clearance to use it on a K7M engine.
I have no workshop so am light on tools. I'm hoping the only answer is not "buy a suitably-sized torque-wrench".
I suppose I could find one to hire, but before I go down that route, is there perhaps an alternative? Perhaps a rule of thumb?
I watched a video of one guy doing the timing belt on a K7m engine. In it, he removed the tire and engine guard in the wheel well to gain access. I couldn't finish watching it to see how he torqued the bolt, but a long extension should get you access into the crank bolt. In your case, you need to torque it to 20 lb-ft, then another 100° of rotation. With an extension, there will be some flex while doing the 100° rotation. You need to know where you start and where your wrench stops at when at rest. When you stop turning your wrench, it will bounce back some, so to compensate you have to go past where it needs to stop, then let it settle to see where it bounces back to. Luckily you have a "+/- 5°" leniency where you can find the sweet spot without worry of going too much or too little. To get there, turn the wrench "a little past 90°" and you should be golden. You can also use a marker to put a small mark pointing up to the 12 o'clock position, then see where it is pointing to as you turn the bolt to get the final degreed torque. In either case, you'll want to ensure the engine will not turn to ensure the turning degree is as accurate as you can make it.
Note: I'm using the term "wrench" generically, meaning the device you are using to torque the bolt. This could be a breaker bar or a torque wrench capable of rendering degrees.
